getting better curves

let me apologize ahead of time by saying if you see any typos its because im typing with a cellphone.

my most favorite artist name is Alien1452. He has artwork on concept art as well. Ive been studying his work for a while now and I am trying to figure out how he is able to establish really good curves in his artwork. I'm guessing he is using a intuos tablet when he draws and he also uses corel painter 6.1;but , the curves in his artwork art pretty good. I cant seem to achieve the same results when I draw... can anyone help?